The shape of the constellation

Will the shape of the constellation never change? A total of 88 constellations in the northern and southern hemispheres were officially named by astronomers. This was established by 1930 International Astronomical Union. The names of these constellations include 14 names, 9 species of birds, 2 species of insects, 29 species of land and water animals, some mythical animals and some inanimate objects. It is worth mentioning that the shapes and names of most constellations are nothing like each other. Probably when the ancients named constellations, they tended to use symbolic methods to name constellations as their favorite animals or mythical figures.

Also, the stars in the same constellation rarely have anything to do with each other, but visually they are very close and the distance from us is very different.

The shape of the constellation is not immutable. Although these stars seem to have been fixed in the same position for the past 3000 years, in fact they have been moving relative to the sun at a speed of up to 10 kilometers per second.

Because they are too far away from us, it is difficult for us to observe the change of their position unless there are 30 thousand years. Because of this action, 50,000 years later, bucket handle of the Big Dipper will bend his hips even more than today. Although the shape of the constellation will change with time, we probably won't change the name of the constellation because of it.

In addition, according to the different seasons and the time when individual constellations reach zenith, the 88 constellations are roughly divided into four groups, namely, spring constellations, summer constellations, autumn constellations and winter constellations.

Why do the starry sky change in spring, summer, autumn and winter? This is because when the earth revolves around the sun, the side facing away from the sun is the starry sky we can see in the season that night. As the earth rotates around the sun, it gradually changes its position, so the starry sky in the background slowly changes.

What shapes do the twelve constellations represent? Do symbols count as shapes? Here is: campus.chinaren/20050714/n226294790. shtml can't enter symbols because he can't paste pictures.

What's the name of Ursa major in the shape of a spoon?

In ancient China, the seven bright stars in Ursa Major were considered to be in the shape of a spoon, which is what we often call the Big Dipper. The three stars η, ζ and ε are the handle of the spoon, and the four stars α, β, γ and δ constitute the spoon body. In fact, when looking at the constellation Ursa major, the shape of the spoon is easier to see than the image of the bear. This big spoon is in the sky all year round, and the direction of the handle changes in different seasons, and one season happens to be one direction. In the words of the ancients, it is: "bucket handle refers to the east, and the world is spring; Bucket handle guide, the world is summer; Bucket handle refers to the west, and the world is autumn; Bucket handle refers to the north, and it is winter in the world. " There was no calendar in ancient times, so people used this method to calculate the four seasons. Of course, due to the rotation of the earth, this phenomenon must be seen after eight o'clock in the evening. At different latitudes of the earth, the constellations you can see are different. The constellation Ursa major can be seen all year round in areas above 40 north latitude, that is, to the north of Beijing and Greece. However, in spring, Ursa major hangs high in the northern sky, which is the best time to watch it in four seasons.

What constellation shape is this? balance

What shape is Orion? One of the zodiac signs. Located between Gemini, Unicorn, Canis Canis, Taurus Rabbit, Bojiang and Canis Canis, its northern part is immersed in the Milky Way. The main body of the constellation consists of four bright stars, Betelgeuse and Betelgeuse, forming a quadrilateral. In the center of the quadrangle, there are three bright stars in a straight line, which should be a belt tied around the hunter's waist. In addition, under these three stars, there are three little stars, which are swords hanging on the belt. The whole image is like a brave hunter, with his head held high, which is very spectacular and has been noticed by people since ancient times.

Under the hunter's sword, the naked eye can see a blue and white hazy nebula, which is the famous Orion nebula. At the left end of the hunter belt, there is a dark nebula shaped like a horse's head, which is the famous horse's head nebula (invisible to the naked eye). Besides these famous nebulae, Orion has many gas nebulae.

The four stars α, γ, β and κ in Orion form a quadrilateral, and in its center, the three stars δ, ε and ζ are arranged in a straight line. These are the seven brightest stars in Orion, among which α and β are first-class stars and the rest are second-class. There are so many bright stars in a constellation, and the arrangement is so regular and magnificent. No wonder, all over the world, it is a symbol of strength, tenacity and success, and people always compare it to gods, warriors, superman and heroes.

Among the 28 hotels in Sanyuan, China, Orion is equivalent to Betelgeuse, Jing Daole, Shenqi and Shuifu.

The brightest star in Orion is beta star, with an apparent magnitude of 0. 12, ranking seventh among all bright stars in the whole day, with an absolute magnitude of -7. 1 and a surface temperature of 12000. Alpha Orion, the ninth brightest star in the whole day, Latin for Betelgeuse, with a brightness of 0.06-0.75 and a period of 5.5 years, is an irregular variable star. Every year 1 the end of February, at 8: 00 pm, the three stars of Orion are high in the southern sky, so there is a folk saying that "the three stars are shining high and the New Year is coming".

The best observation date of Orion is1from early February to early April. It rises from the southeast when it appears, and falls from the southwest after crossing the zenith. Orion α and β are extremely bright and easy to see in a cloudless night sky. However, because there are many bright stars in the winter night sky, other stars are needed to identify Orion. Usually, three bands arranged in a straight line are used as its identification index. The brightness of these three stars is between 1.7-2.3, so they can be easily seen clearly in the sky with little light damage. α and β are located at the north and south ends with a vertical line in the middle. After figuring it out, it is found that G and κ are in the west of α and in the east of β, and the whole Orion contour has been called out!

What are the twelve constellations like?

Vivid language describes the shape of a constellation in the distant northern sky. The constellation Ursa major stands beside the Milky Way, and Beidou guides the way, so magnificent.